Abstract:In order to obtain the geological disaster risk index of subsidence area and judge the risk degree, a fuzzy comprehensive monitoring method for geological disaster risk in mine ground subsidence area is proposed. After the primary selection of the indicators, the correlation coefficient method and partial least square method are used to re select the indicators to construct the evaluation index system; The comprehensive weight of the selected evaluation indexes is calculated by analytic hierarchy process and factor analysis; Calculate the product between the index weight and the fuzzy membership matrix, obtain the fuzzy comprehensive monitoring index of geological disaster risk in mine ground subsidence area, compare the evaluation grade table, and divide the geological disaster risk grade. The results show that the research method is used to divide a coal mine area. Area 1 is a high-risk area, area 3 and 4 are medium risk areas, area 7, area 6 and area 2 are low-risk areas, and area 5 is a very low-risk area. The fuzzy comprehensive monitoring of geological disaster risk in mine ground collapse area is completed, which provides a reliable basis for putting forward prevention and control strategies.